Credit:
MTV

On this week's all-new episode of MTV's 10 on Top (airing Saturday, August 10 at 12:30 p.m. ET/PT), stars Tyler Blackburn and Shay Mitchell dish on which of the show’s cast members is the biggest prankster on set. And if you know these PLL stars like we know them, then it probably won't take you long to figure out who the prankster is!

Watch the exclusive clip from the episode above to find out what pranks the PLL cast play on set. (Spoiler alert: Get ready for some major Haleb feels.)